Bao’an Mine with gas outburst was taken as an example, a partial Y-type ventilation test was carried out at the recovery mining working face along the gob side entry, and the ventilation and gas extraction of the working face were analyzed during the partial Y-type ventilation. The results showed that the gas concentration in the section was 0.48% ~ 0.66% with the ventilation method of “one - in - two - back”; with the increase of the length of the gob-side entry, the gas concentration increased, the air volume gradually decreased, the air volume in the return wind roadway gradually increased, and the gas extraction volume in the extraction area gradually increased. This study exerted significance for the reasonable arrangement of the ventilation method along the air-holding roadway at the recovery working face.
王 敏. 煤与瓦斯突出矿井回采工作面偏Y型通风效果的影响因素分析[J]. 煤炭与化工, 2021, 44(4): 118-121.
Wang Min. Affecting factors of ventilation effect of Y-shaped working face with coal and gas outburst. CCI, 2021, 44(4): 118-121.
